<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Surface - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            chart.setOption({
                tooltip: {},
                backgroundColor: '#fff',
                visualMap: {
                    show: false,
                    dimension: 2,
                    min: -1,
                    max: 1,
                    inRange: {
                        color: ['#313695', '#4575b4', '#74add1', '#abd9e9', '#e0f3f8', '#ffffbf', '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026']
                    }
                },
                xAxis3D: {
                    type: 'value'
                },
                yAxis3D: {
                    type: 'value'
                },
                zAxis3D: {
                    type: 'value'
                },
                grid3D: {
                    viewControl: {
                        // projection: 'orthographic'
                    }
                },
                series: [{
                    type: 'surface',
                    wireframe: {
                        // show: false
                    },
                    equation: {
                        x: {
                            step: 0.05
                        },
                        y: {
                            step: 0.05
                        },
                        z: function (x, y) {
                            if (Math.abs(x) < 0.1 && Math.abs(y) < 0.1) {
                                return '-';
                            }
                            return Math.sin(x * Math.PI) * Math.sin(y * Math.PI);
                        }
                    }
                }]
            });

            window.addEventListener('resize', function () {
                chart.resize();
            });

        </script>
    </body>
</html>